Answer:
The drop in pitch of ambulance sirens as they pass by and the shift in red light are common examples of the Doppler Effect.
...
It is used in:
Sirens.
Astronomy.
Radars.
Medical imaging and blood flow management.
Flow management.
Velocity profile management.
Satellite communication.
Audio.
(It is so much but you can select three of them and write it)
Answer:
12N
Explanation:
We are given that one of the forces are acting only in the horizontal x-direction. As a force must be applied on an object of mass in order to cause acceleration, the 6.0ms^-2 acceleration is due to the non-horizontal force acting on the 2.0kg object.
Using Newton's Second Law of motion; we know that for a constant mass, force is equal to mass times acceleration, F=ma.
Assuming the other force is acting only in the vertical direction (question doesn't specify, thus we are finding the minimum force to cause this acceleration):
F= 2.0kg * 6.0ms^-2
F=12.0 kgms^-2
F=12 N
Meters would be the best way to record the length
You have to move your foot to stop the car so I guess that would be considered work by moving your foot
